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<p>Activated carbon from banana peel was prepared using calcination of banana peel as biomass at 600 ̊C (ACB). ZnO and CuO nanoparticles were synthesis and decorated on ACB, respectively. The prepared samples were characterized by FTIR, XRD, FESEM, EDX, TGA and BET methods. The results showed ZnO and CuO decorated on ACB have particle size of 45nm and 38 nm and surface area of 242 m<sup>2</sup> g<sup>−1</sup> and 325 m<sup>2</sup> g<sup>−1</sup>, respectively. The produced samples were studied as sorbents for removal of cyanine acid blue dye (CAB) from aqueous solutions. The adsorption efficiency was examined by varying process parameters such as contact time, pH and mass of sorbents. Results showed the order of percent removal of CAB at contact time 60 min and pH 10 was as follow: ACB &lt; ZnO &lt; CuO &lt; ZnO decorated on ACB &lt; CuO decorated on ACB. CuO decorated on ACB with interconnected pores and band gap 1.42 eV demonstrated excellent adsorption activity for CAB. The kinetic study revealed the fitness of pseudo second order kinetic model for the absorption of CAB dye. Thermodynamic parameters presented endothermic and spontaneous adsorption of CAB onto sorbents. TOC analysis showed the mineralization of CAB dye was about 62%. This study presented cost effective synthesis and reusability of ZnO and CuO decorated on ACB that is highly effective for adsorption of CAB.</p>

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Comparative Study of Cyanine Acid Dye Removal By ZnO and CuO Nanoparticles Decorated On Activated Carbon From Banana Peel

  • 期刊论文

  • 发表日期：

    2025年10月6日

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  • Ahmah Rafat,
  • Saeedeh Hashemian,
  • Masoud Reza Shishabor

摘要

Activated carbon from banana peel was prepared using calcination of banana peel as biomass at 600 ̊C (ACB). ZnO and CuO nanoparticles were synthesis and decorated on ACB, respectively. The prepared samples were characterized by FTIR, XRD, FESEM, EDX, TGA and BET methods. The results showed ZnO and CuO decorated on ACB have particle size of 45nm and 38 nm and surface area of 242 m2 g−1 and 325 m2 g−1, respectively. The produced samples were studied as sorbents for removal of cyanine acid blue dye (CAB) from aqueous solutions. The adsorption efficiency was examined by varying process parameters such as contact time, pH and mass of sorbents. Results showed the order of percent removal of CAB at contact time 60 min and pH 10 was as follow: ACB < ZnO < CuO < ZnO decorated on ACB < CuO decorated on ACB. CuO decorated on ACB with interconnected pores and band gap 1.42 eV demonstrated excellent adsorption activity for CAB. The kinetic study revealed the fitness of pseudo second order kinetic model for the absorption of CAB dye. Thermodynamic parameters presented endothermic and spontaneous adsorption of CAB onto sorbents. TOC analysis showed the mineralization of CAB dye was about 62%. This study presented cost effective synthesis and reusability of ZnO and CuO decorated on ACB that is highly effective for adsorption of CAB.